It isn't possible on the device. And, and while there are several methods to get the annotations from the device, there are none that will add them to the book. You can see the methods in
https://www.mobileread.com/forums/sh...01#post3215101. That is my summary of what you can do. The only method I can think of that is missing is [thread=]Kobo annotation exporter[/thread] from Toxaris. From memory, it will get the surrounding text from the book. But, it doesn't work with firmware later than about 3.20.x.